Hmm, yeah let me know where you're up to. The walkthrough might be missing something... You could watch a YouTube walkthrough to see if you missed something
I'll check a walkthrough just in case then to see if I did something wrong, but this is what happened:
After waking up, I went to the right, saw Drissa, talk to her and when I tried to go back to the camp, the screen fades out but then fades in back in the room to the right. When I then go to the camp, it works but Witt doesn't return.